Glass-blower&#39;s dummy.



No. 818,705. PATENTED APR. 24, 1906 P. J. OBRIEN.

GLASS BLOWERS DUMMY.

APPLICATION FILED JULY 6, 1905.

i l l 4 4 J 5 KW UNITED STATES PETER J. OBRIEN, OF TOLEDO, OHIO.

GLASS-BLOWERS DUMMY.

Specification of Letters Patent.

Patented April 24, 1906.

Application filed July 6, 1905. Serial No. 268,417.

To wZZ whom it may concern:

Be it known that 1, PETER J. O'BRIEN, a citizen of the United States,and a resident of Toledo, in the county of Lucas and State of Ohio, haveinvented certain new and useful Improvements in Glass-Blowers Dummies;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to the figures of reference markedthereon, which form a part of this specification.

My invention relates especially to the class of machines employed in themanufacture of blown-glass articles and known as glassblowers dummies orhelpers and it has for its object the provision of a simplified andimproved form of apparatus of this character whereby its operation isfacilitated and the work of the operator incident to the running of thesame is reduced to a minimum.

Further objects as well as the operation, construction, and arrangementof the parts of the invention will be fully described in the followingspecification and shown in the accomp anying drawings, in which Figure 1is a top plan view; Fig. 2, a side elevation, and Fig. 3 a frontelevation, of one form of machine embodying my invention.

Referring to the drawings, 1 represents an open tank or vessel of anysuitable size or shape for retaining water, to the side of which issecured a bracket 2. Rising vertically from the horizontal arm of thebracket 2 are two spaced guide-rods 3, which have their lower endsthreaded or otherwise suitably secured to said bracket and their upperends rigidly connected by a cap-piece A crosshead 4, having verticalopenings to receive the guiderods 3, is mounted to have a verticalreciprocatory movement on said rods and is formed on its inner end witha down wardlyprojecting arm, to which a glass-mold 5 is secured insuspended position to enable it to be entirely immersed within the waterin the tank 1 when the cross-head 1 is lowered on the guide-rods 3. Themold 5 comprises two hinged sections, one of which is rigidly secured tothe cross-head 4, while the other is adapted to have a pivotal movementrelative to said first section and cross-head to enable the mold to beopened to permit the removal of an article after it has been blown.Proecting rearwardly from the cross-head 1 are two arms 6, at the endsof which is carried a hollow tube or sleeve 7, which is disposed insubstantial parallelism with the cross-head 4. Reciprocally mountedwithin the sleeve or tube 7, with one end projecting therefrom to therear of the mold 5, is a rod 8, which has the upper surface of itsextended end pro vided with two spaced lugs or spurs 9 to form a ocketor stirrup of suitable width to receive the toe of the operators foot,thus enabling the rod to be reciprocated by an oscillatory movement ofthe foot. The purpose of the rod 8 is to open or close the mold andconnects with the movable section thereof through the medium of thepivotal link 10. The rod 8 has its movement limited by reason of a pin 8thereon operating within a slot 7 a in the sleeve 7. Coiledcompressionsprings 3 are mounted on one or both of the guide-rods 3below and above the crosshead 4 to cushion the limits of movementthereof.

Fulcrumed to a stud 11, projecting from the bracket 2, is a lever12,which has one end provided with a counterpoise 13 and its other endconnecting with the cross-head 4 through the medium of the two pivotallinks 14, the lever and links together forming a toggle, by means ofwhich the crosshcad is raised and lowered. The means shown forconnecting the contiguous ends of the lever and links consist inforn'iing a sleeve 15 in the end of the lever in which is secured by acotter-pin or otherwise a short shaft 16, the ends of which are looselymounted in bearings formed in the lower ends of the links 14, as shownin Figs. 1 and 3.

A lowering of the cross head and connected parts for the purpose ofcausing an immersion of the mold 5 is effected by a pres sure on thefoot-treadle 17, which is adjustably secured to the treadle-rod 17 a andconnects through it to one end of the lever 18, A

which is fulcrumed to the tank 1, and connects at its other end with theweight-arm of the lever 12 through the medium of the link 19, thusadapting a lowering of the treadle to raise the weight end of the lever12 and cause a closing or converging movement of the toggles, which inturn lowers the cross-head and mold.

A platform 20, on which the operator stands and through which thetreadle 17 projects, is mounted to the rear of the cross-head 4 with itsforward edge in contiguous parallelism with the rod 8 and its surfacesubstantially in a horizontal plane with that of the upper surface ofsaid rod when the crosshead is in normal or raised position.

The operation of the machine shown is as follows: Preparatory to blowinga glass article in the mold, the operator places the toe of the leftfoot between the spurs 9 on the rod 8 and by a movement thereof causessaid rod to slide to the right within the sleeve 7, thus closing themold and retaining it in that position during the' blowing of thearticle therein. When the article has been blown, the operator moves hisfoot to the left to cause an outward movement of the rod 8 and anopening of the mold, which permits the removal of the blown article.After the article has been removed the operator causes the mold to beimmersed in the water in the tank by press ing with his right foot uponthe treadle 17, thereby causing the weight-arm of the lever to be raisedand the cross-head and connected parts to be lowered by reason of themovement imparted to the links 14.

It will be apparent from this construction that the work entailed uponthe operator is comparatively light compared with other machines of thisclass, inasmuch as he is not compelled to alternately raise first onefoot and then the other to efiect a raising or lowering of the mold andan opening or closing thereof as is customarily the case in this classof machines, which movement when continued for any length of time isvery tiring to the operator. In my machine the workman has only onetreadle to operate, while the opening and closing of the mold iseffected by a simple side movement of the foot.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In an apparatus of the class described, a water-tank, avertically-movable member, a mold suspended from said member over thetank and having a hinged section, means for opening the mold, and meanscomprising a toggle and operating-treadle having connection with thetoggle for effecting a lowering of said member and mold, said treadlepassing through and above a platform disposed at the rear of and on aplane with the normal position of the vertically-movable member.

2. In an apparatus of the class described, a

ber and a fixed point in a vertical plane therewith, and means separatefrom the moldopening means for effecting a movement of the toggleconnectlon to cause a lowering of said member.

3. In a machine of the class described, a

verticallymovable member, a mold sus-- pended from said member andhaving a swinging part, personally-operated means for effecting anopening and closing of said mold, and means for causing alowering ofsaid member, comprising a counterpiose-lever and a common lever in linkconnection, a foottreadle connecting the common lever, and linkconnection between the counterpoiselever and said member whereby amovement of the latter lever effects amovement of said member.

4. In a machine of the class described, the combination of a tank, abracket secured to the side of the tank, vertical guide'members arisingfrom the bracket, a member mounted to have a vertical movement on saidguide members, a two-part mold suspended from said member over the tank,means carried by said member for effecting an opening and closing of themold, a counterpoise-lever pivoted below the bracket and having it lightend formed with a bearing-head, two links pivoted at one end to oppositesides of the bearing-head of the lever and having their other ends inpivotal connection with the movable member whereby to cause a loweringof said member as the weighted end of the lever is raised, a treadlemounted in a platform at the rear of the movable member, and a lever andlink connecting the treadlerod and counterpoise-lever whereby to causean elevation of the weighted end of the latter lever when the treadle isdepressed.

In witness whereof I have hereunto signed my name to this specificationin the presence of two subscribing witnesses.

PETER J. OBRIEN. Witnesses:

OTTO L. WEST, M. J. HALL.

